Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-01-13
Class.Quant.Grav. 21 (2004) 3593-3610
Physics
High Energy Physics
High Energy Physics - Theory
Typos corrected, minor changes, 23 pages, no figures, LaTeX
Scientific paper
10.1088/0264-9381/21/14/019
I construct field theory on an evolving fuzzy two-sphere, which is based on the idea of evolving non-commutative worlds of the previous paper. The equations of motion are similar to the one that can be obtained by dropping the time-derivative term of the equation derived some time ago by Banks, Peskin and Susskind for pure-into-mixed-state evolutions. The equations do not contain an explicit time, and therefore follow the spirit of the Wheeler-de Witt equation. The basic properties of field theory such as action, gauge invariance and charge and momentum conservation are studied. The continuum limit of the scalar field theory shows that the background geometry of the corresponding continuum theory is given by ds^2 = -dt^2+ t d Omega^2, which saturates locally the cosmic holographic principle.
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